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LC74731 Datasheet

  • LC74731

  • On-Screen Display Controller

  • 38頁(yè)

  • SANYO

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Ordering number : ENN*6526
CMOS IC
LC74731W,74732W
On-Screen Display Controller
Preliminary
Overview
The LC74731W and LC74732W are on-screen display
CMOS ICs that display characters and patterns on a TV
screen under the control of a microcontroller. These ICs
display 16
脳
16-dot characters and up to 12 lines of text
with 24 characters per line.
鈥?Character color: Eight colors in character units (in
internal synchronization mode): 2 fsc and 4 fsc
(Black, red, green, yellow, blue, magenta, cyan, and
white)
鈥?Character background color: Eight colors (in internal
synchronization mode): 2 fsc and 4 fsc
(Black, red, green, yellow, blue, magenta, cyan, and
transparent)
鈥?Screen background color: Eight colors (in internal
synchronization mode): 2 fsc and 4 fsc
(Black, red, green, yellow, blue, magenta, cyan, and
white)
鈥?External control inputs: Serial interface with an 8-bit
data size.
鈥?Built-in sync separator circuit
鈥?Video outputs: NTSC, PAL, PALM, PALN, NTSC
4.43, and PAL 60 composite video signal outputs
鈥?Supports Y/C input
Features
鈥?Text structure: 12 lines
脳
24 characters (Up to 288
characters)
鈥?Character format: 16
脳
16 dots
Character display clock frequency: about 9 MHz
鈥?Character sizes: Four sizes each in the horizontal and
vertical directions with the size set in line units.
鈥?Number of characters supported:
LC74731W:256 (internal)
LC74732W:512 (internal)
Up to 8192 using an external ROM (for Japanese)
[Reference] JIS X0298 (1990): 6877 characters
JIS level 1 kanji: 2965 characters
JIS level 2 kanji: 3388 characters
Special characters: 524 characters
鈥?Display start positions: 128 positions each in the
horizontal and vertical directions
鈥?Blinking, reverse video, reversed blinking, and character
outlining: May be specified in individual character units.
鈥?Blinking types: Two types with periods of about 1.0 and
about 0.5 seconds.
鈥?Blanking: The whole font area (16
脳16
dots) can be
blanked in line units
(Four types: no blanking, character size blanking,
character plus outlining size blanking, and whole area up
to adjacent character blanking)
鈥?Line spacing control: Zero to seven scan lines, in line
units
Package Dimensions
[LC74731W,74732W]
12.0
10.0
1.25
48
49
0.5
0.18
1.25
33
32
0.15
12.0
10.0
0.5
1.25
64
17
1
16
0.5
Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft鈥檚
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other
parameters) listed in products specifications of any and all SANYO products described or contained
herein.
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
63000RM (OT) No. 6526-1/38
0.1
0.5
SANYO: SQFP64
1.7max
1.25

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